1/2" x 22 threads

[Guest imported_Roland]

Hi Guys,

I am rebuilding a mechanical oiler and discovered that it has obsolete 1/2" x 22 threads (not 1/2" x 20 or 24).

Is there anyone who will let me borrow a tap or die of this size for a week?

If I borrow a die (preferred), it will be to make a steel threaded rod that I can use to reform brass threads in a 1/2" x 20 flare nut.

If it is a tap, I'll re-cut the brass threads.

Of course, I'll pay shipping.

I have been looking in all of the usual places and have quotes of $100 to $150 to custom re-make this definitely a non-current size old size !!

A thread file will not work since I need to modify a 1/2" x 20 flare-nut.

The "Precision Automatic Co." mechanical oiler goes to my non-running 1910 Rambler which has had pieces lost over the years.

Regards, Roland